“…In the field, the qualitative assessment of erosion was conducted by estimating the "soil surface factor" (SSF). The SSF, ranging from 0 to 100, is an index that assesses the state of degradation of a slope (plot) by water erosion [14,15]. It consists of observing the plot and assigning values to the degrees of the factors linked to the erosion process, thus making it possible to classify the plots by the degree of erosion: soil movement, surface litter, stones on the soil surface, witnesses of erosion, flow model, ravines, and gullies.…”